380997720 has 96 divisors (see below), whose sum is σ = 1241557200. Its totient is φ = 101327616.

The previous prime is 380997713. The next prime is 380997739. The reversal of 380997720 is 27799083.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158286 + ... + 160674.

Almost surely, 2^380997720 is an apocalyptic number.

380997720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380997720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620778600).

380997720 is an abundant number, since it is smaller than the sum of its proper divisors (860559480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

380997720 is a wasteful number, since it uses less digits than its factorization.

380997720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 380997720 is about 19519.1628918865. The cubic root of 380997720 is about 724.9490063222.

The spelling of 380997720 in words is "three hundred eighty million, nine hundred ninety-seven thousand, seven hundred twenty".